Environmental and physiological impacts of heavy metals on Nile tilapia (Oreochromis niloticus)
Bayomy,, M., Alne-na-ei, A., Gaber, H., Khairy, D., Sayed, H. (2015). Environmental and physiological impacts of heavy metals on Nile tilapia (Oreochromis niloticus). EKB Journal Management System, 1(2), 52-58. doi: 10.21608/jbaar.2015.105952
M. F. F Bayomy,; A. A. Alne-na-ei; H. S. Gaber; D.M Khairy; H. A Sayed. "Environmental and physiological impacts of heavy metals on Nile tilapia (Oreochromis niloticus)". EKB Journal Management System, 1, 2, 2015, 52-58. doi: 10.21608/jbaar.2015.105952
Bayomy,, M., Alne-na-ei, A., Gaber, H., Khairy, D., Sayed, H. (2015). 'Environmental and physiological impacts of heavy metals on Nile tilapia (Oreochromis niloticus)', EKB Journal Management System, 1(2), pp. 52-58. doi: 10.21608/jbaar.2015.105952
Bayomy,, M., Alne-na-ei, A., Gaber, H., Khairy, D., Sayed, H. Environmental and physiological impacts of heavy metals on Nile tilapia (Oreochromis niloticus). EKB Journal Management System, 2015; 1(2): 52-58. doi: 10.21608/jbaar.2015.105952

Environmental and physiological impacts of heavy metals on Nile tilapia (Oreochromis niloticus)

Journal of Bioscience and Applied Research
Article 3, Volume 1, Issue 2, June 2015, Page 52-58  XML PDF (3.96 MB)
DOI: 10.21608/jbaar.2015.105952
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Authors
M. F. F Bayomy,1; A. A. Alne-na-ei1; H. S. Gaber2; D.M Khairy2; H. A Sayed3
1Zoology Department, Faculty of Science, Menoufiya University,Shebin El-kom, Egypt
2Professor in Pollution laboratory, National Institute of Oceanography and Fisheries, El- Kanater El-Khairyia
3Organic Department, Central Laboratory for Environmental Quality Monitoring, El- Kanater El-Khairyia, Egypt
Abstract
The present study was conducted to investigate the distribution of selected metals (Fe, Zn, Cd, Pb, and Cu) in tissues of Nile Tilapia (Oreochromis niloticus) grown along El- Khadrawia drain – Mubark industrial Zone. The tissues analyzed included muscle and liver. Results showed metal concentrations in water followed a richness of: Fe> Zn> Cu> Pb >Cd mg/l (p < 0.05) while Fe> Cu > Zn > Pb > Cd mg/Kg dry wt. (p < 0.05) in muscles and liver tissues in winter season. Metal levels in muscles follow the level: Zn>Fe>Cu> Pb>Cd mg/Kg dry wt. (p < 0.05), while in liver they follow the level: Fe > Zn > Cu>Pb>Cd mg/Kg dry wt. (p < 0.05) in summer season. The presence of heavy metals led to significant decrease in nucleic acids (DNA & RNA) contents in liver tissue during summer season (p<0.05). So, the study showed that muscles of Nile Tilapia (Oreochromis niloticus) along El- Khadrawia drain are not safe from contamination with the metals investigated
Keywords
Heavy metals; Nile tilapia; Liver; Muscle; DNA&RNA
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